To build a high zoom lens more lens elements are needed in the lens assembly, making it more complicated and susceptible to not having the very sharp focus which can be achieved by the simplest high quality lenses. Although Projectors with high Zoom Ratio range looks very appealing because it offers high flexibility in placement of the projector, it is not a good feature, because it can affect the brightness and sharpness of the projector. So the Zoom Ratio is defined as the ratio of the size of the largest image to the smallest image the projector can zoom to.
Short throw projector definition manual#
Manual zoom means you will have to turn the projector lens zoom ring manually to adjust the zoom.Ī projector is said to a have Zoom ratio of 2 if the largest image it can zoom to is double the smallest image. Some projectors have motorized zoom facility which can control the projector zoom with the remote control of the projector. Optical zoom is the preferred zoom feature in a projector. Digital Zoom in a projector is not good and the feature of digital zoom usually is not offered in projectors. The zoom feature in a projector can be achieved digitally or optically by rearranging the lenses inside the Lens assembly. Zoom Lens in Projectors explainedĪ projector with the zoom lens enables you to make the picture on the screen larger or smaller without having to move the projector. These are all properties of the projector lens and are explained below.
What makes the projector lens of one projector better than the other is the features of the projector Lens called Zoom Ratio, Throw Distance and Throw ratio. As far as the clarity of transmission in projector lens all are almost equally good. The Lens in a projector plays a very important part in the quality of a Projector.
Why a Projector is better than a big TV What Projector 'Zoom Ratio', Throw Distance', 'Throw Ratio' mean?
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